Screening and feeding apparatus



Nov. 9,1926. Y 1,606,301 4 F. JONES SCREENING AND FEEDING APPARATUS Filed Sept. 7, 1923 5 Sheets-Shut l Nov. 9 1926.

F. JONES SCREENING AND FEEDING APPARATUS Filed Sept- 7, 1923 s sheets-sheet 2 Iuu n u@: HHl

kw w i a.

No v'. 9 1926.

7 1923 5 Sheets-Sh eet 5 Filed Sept.

Patented New-Q, 1926.

FRANK JONES, or SALT LAKE CITY, UTAH, Assrenoa, BY r/msnn AS IGNMENTS, or

ONE-HALF TO INLAND ENGINEERING OOIVIPANY,ACORPGRATION.OF ILLINOIS.

scnnnnrne N FEEDING APP RATUS.

Application filed September 7, 1923 Serial N0. 661,399.

My invention relates to screening and feeding apparatus and has for its primary objectthe provision of an improved apparatus of this character, which will facilitate the handling of heavy bulk material, such as ore, coal, gravel, and the like, and which willbe especially suitable for use as either a screening or a feeding apparatus or which, if desired, will perform both of these functions with greater efiiciency than otherapparatus of this general character now in use.

A more specific object of the invention is to provide an apparatus of the above character, having a screen portion made'up of a plurality of spaced bars adapted to be moved with relation to each other, sons to agitate the bulk of material as it passes over the bars, and thereby effect an efficient separation of the smaller particles of material from the bulk, and also prevent the particles of material from lodging in the'spacesbetween the bars. In this connection the invention contemplates, as a preferred construction, two or more sets of bars, which are movable both longitudinally and vertically with relation to each other, whereby the movable bars, in addition to effecting an agitation .of the material, function to' the discharge forward the 'material toward end oft-he apparatus Another object is to provide, in a feeding apparatus of the above character, a novel.

and improved screening member in which the elements of the screen member may be readily and conveniently adjusted to vary the size of the screen openings.

A further object is to provide improved means forvarying the inclination of the apparatus, so as to control the velocity of the material passing through the apparatus.

In this connection the invention 0011mmplates adjusting means which may be adjust ed without interrupting the operation of the app'aratua,'and whi'chwill provide a wide range of adjustment, whereby the .move ment of thematerial through the apparatus may be so controlled as to maintain a relatively slow uniform movement-,or a move-' ment of such velocity as may be desired in connection with the character of work being performed by thejap'paratus.

The invention has for'further objects-the novel constructions I and arrangementv of parts and devices, hereinafter described and claimed, for carrying out the above stated objects, and such other objects as will appear from thefollowing description of the invention.

The invention is illustrated in a preferred embodiment in the accompanying drawings wherein:

Fig. 1 is a side View in 'elevationof my preferred apparatus, certain parts of which are broken away to illustrate the internal construction. I

Fig. 2 is a plan View of the illustrated in Fig. 1; and

Fi 3 is a cross section. taken on line'3-.3 ofFig. 1. ,j

Like characters of reference designate like construction parts throughout the several figures of the drawings. p

The'embodiment of the invention shown in the draw ngs comprises a stationary supporting structure 10, a normallyfinclinedf frame 11 pivotally supported on said structure, adjusting mechanism 12 interposed between the said fixed support and the adjustable frame adapted to be manipulated to varythe inclination of the frame, and aplurality of longitudinally extending bars spaced apart and supported on said frame to provide a 'screen structure" designated generally by the reference character 13.

, The stationary supporting structure 10 may be of any suitable construction that will give the desired rigidity. In the'drawings,

this supporting'structure is illustrated as" consistlng of upright corner members 14 and 15 I secured together by means of suitable cross'braces 16.. This particular form of supporting structure is illustrated only for the purpose. ofconvenience and will inpractice be varied to suit existing conditions.

The frame member consists, preferably, of a pair of channel members 17, 17, arranged back .to back to provide rigid 'side me mbers for opposite sides .of the apparatus. These side members are secured together icy-forward and rear cross members 18 and 19.

' The frame 11 ispivotally connected at its upper end to the stationary supportingstruce,

ture 10 by means of gussets 20, 20, secured between the pairs of channel bars 17, 17, at opposite sides of the frame and supported on studs 21, extending through openings in the upper end of corner members 14 of the stationary supporting structure.

The lower end of the frame is adjustably supported at opposite sides on cams 22, 22, so as to be raised or lowered to vary the inclination of the frame and screen structure, and thereby vary the velocity of the material which passes over the screen structure. l Vhen the material being handled is of such character that the desired separation of the smaller pieces is readily obtained, the cams 22, 22, are manipulated to increase the inclination of the screen structure. terial is of such character as to require a longer time to effect entire separation of the smaller particles, or if the apparatus is employed for feeding ore, stone, gravel, or similar material, into other equipment, for

example, rollers, Crushers, or the like, where it is desired to maintain a slow uniform passage of material to such equipment, the cams 22, 22 are manipulated to elevate the lower end of the frame 11 and thereby elevate the screen structure toward the horizontal, or to such angle as may be found to be necessary to accomplish the desired results.

The cams are arranged to bear against the inner channels 17, 17 adjacent the gussets 23, 23, interposed between said channel members. These gussets function as guides to hold the frame 11 in proper position on the cams. The cams are preferably rigid on a cross shaft 24, and may be manipulated to vary the inclination of the frame and screen structure without interrupting the operation of the movable bars or other associated parts of the apparatus. The means for manipulating the cams 22, 22, consists, preferably, of a worm wheel 25, secured to the shaft 24, a worm 26 mounted on a transverse shaft 27, a hand wheel 29. The transverse shaft is journaled in suitable bearings 28 on the upright members, of the stationary support at one side of the apparatus, and the hand wheel 29 is so disposed that it may be rotated at will to effect the desired adjustment of the frame 11 and screen bar members. 7

The screen structure of the apparatus is made up, preferably, of two sets of bars designated 30 and 31, a'ranged in alternate relation to each other, and spaced apart to provide spaces of suitable width between them. The bars of each set are formed near their ends with bosses 32, 32, which are formed with recesses 33 adapted to receive the upper ends of rocker arms so as to be supported on said arms with capacity for an oscillatory movement. v The bars 30 are supported upon the rocker arms 34, 34 and the bars31 are supported on like rocker arms 35, 35 The rocker arms and the bars support- Tf the maed thereby are operatively attached to each Y other by means of pins 36 which are made, preferably, of some suitable low friction metal. The arms 34, 34, are fixed to rocker shafts 37, 37, mounted in suitable bearings 38, 38, on the frame 11. The outer end of shafts 37, 37 are provided at one side of the apparatus with. operating levers ,39, 39 which are connected at equal distances from the center of the shaft 37, 37 by means of a connecting rod 40. The operating lever 39 is somewhat longer than lever 39 and is 0peratively connected bymeans of a rod 41 to an eccentricv 42. The eccentric 42 is preferably fixed to a transverse shaft 43 journaled in bearings 44 secured to the upper end of the frame 11. The shaft 43, and accordingly the eccentric 42, are rotated by means of a suitable pulley and belt connection 45.

The rocker arms 35, 35 on which the bars 31 are supported are secured to shafts 46, 46 journaled in bearings 47, 47 These shafts 46, 46" are provided with operating levers 48, 48, preferably of the same construction as levers 39, 39, previously described. j

The levers 48, 48 are connected to each other by means of a connecting rod 49. The extremlty of the lever 48 is operatively connected to an eccentric 50 on shaft 43 by means of an operating rod 51.

The rocking arms 34, 34, and 35, 35 are preferably .secured on their respective shafts with capacity for adjustment longitudinally of the shafts, so that the size of the spaces between the bars 30, 31, may be varied to suit the character of material handled by the apparatus, y

In order to make it possible to conveniently adjust the rocker arms to the desired position without danger of disturbing their alignment on their shafts, and to also provide' a reliable connection therewith, the shafts are provided with spline keys '52 which fit in suit-able key-ways, formed in the hub portions of the rocker arms. These arms are held in their adjusted position by means of set screws 54.

Movement is imparted to each set of the bars 30, 31, by means of their operative connection with eccentrics 42, 50. These eccentrics are preferably arranged so that the extreme position of one is 180 from the corresponding extreme position of the other.

This arrangement of the eccentrics, together movement to the material in the direction ofthe discharge end of the apparatus.

- On each side of the bars are skirt boards 55, 55, provided on their inner faces with wearing strips 56 and attached to the frame 11 with capacity for lateral adjustment so as to vary the space. between the outer bars and the skirts in accordance with the size of the spaces between the bars.

lhe adjustable supporting means for the skirts 55, 55, consists preferably of brackets 57 formed at their lower ends with angularly disposed portions 58 provided with elongated openings 59 which receive clamping bolts 60.

The range of adjustment of the .skirt boards may, obviously, be made to suit the condition of the material intended to be handled by the apparatus.

61. designates an angular apron secured to the stationary frame structure at the discharge end of the apparatus so that the finer particles passing through the bars will be directed under the frame structure and so that the coarser particles passed through the apparatus will be directed away from .said stationary frame.

In operation the material to be screened or otherwise treated is introduced into the apparatus at the upper end thereof, and normally-slides by gravity over the inclined bars 30, 31, which are operated to keep the portion of material near these bars in agitation, so as to expedite the separation of the smaller particles from the body of material, and to prevent the particles of material from lodging in the spaces between the bars.

By the manipulation of the hand wheel 29, the screen bars and pivoted frame member 11 may be elevated to any desired angular position such as may be desired in effecting a thorough separation of the small particles from certain kinds of material, or when it is desired to feed the coarse material in uniform manner into other equipment for further treatment.

While the invention is illustrated in one.

specific embodiment, it will be obvious that the construction illustrated is capable of being modified in various respects without departure from the spirit of the invention.

It will, therefore, be understood that the invention contemplates all such changes as come within the scope of the appended respect to each other to vary the "size of the spaces between them, means for imparting longitudinal movement to said bars, and laterally adjustable side skirts supported on opposite sides of said screen structure.

2. In apparatus of the character de-.

arms secured in alignment on said shafts and adapted to fit at their upper ends in the recesses of said bars, and friction pins for connecting the rocker arms with said,

bars, crank arms on said rocker shafts, connecting rods connecting said crank arms, and eccentrics operable to impart rocking movements to said rockerfarms, whereby said bars receive simultaneous vertical and longitudinal movement, certain of said bars being operated in one direction and certain other of said bars being operated in the opposite direction;

3.111 apparatus of the character de-' scribed, the combination with a fixed supporting structure, of a frame pivoted to said supporting structure and adapted to assume various inclined positions, means for raising and lowering the lower end of'said frame, and a screen structure on said frame made up of two sets of longitudinally extending bars disposed in alternate arrangement across the apparatus, a rocker shaft for each set of bars arranged at each end of the frame, upstanding rocker arms on said shafts which support at their upper ends the bars of said screen structure, connecting links for operatively connecting the rocker shafts of each set of rocker bars, and means for rocking in opposite directions the shaft for each set of bars, whereby the bars of one set receive an upward and forward movement, while the bars of the other set receive a downward and rearward movement. 7 V

4:. In apparatus of the character described, the combination with a. fixed supporting structure, of a frame pivoted to said supporting structure and adapted to-assume various inclined positions, means for raising and lowering the-lower end of said frame, a screen structure on said frame made up of two sets of longitudinally extending bars, disposed in alternate arrangement across the apparatus, a rocker shaft for each set of bars arranged at each end of the frame and provided with spline keys,

upstanding rocker arms formed with aligning key-ways to receive said keys of the rocker shafts, and adapted to be adjusted longitudinally of said shafts and support at their upper ends the bars of said screen structure, connecting links for operating in unison the rocker arms of each set of bars,

the bars of one set receive an upward and 10 forward movement while the bars of the other set receive a downward and rearward movement.

FRANK J ONES. 

